O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2024 · Q221 Mark
When heated, copper(II) sulfate crystals, CuSO4•5H2O, react as shown. CuSO4.5H2O(s) → CuSO4(s) + 5H2O(g) When ......1...... copper(II) sulfate, which is ......2...... in appearance, is heated, it forms ......3...... copper(II) sulfate, which is ......4...... in appearance. Which words correctly complete gaps 1, 2, 3 and 4?
A1: anhydrous, 2: blue and crystalline, 3: hydrated, 4: white and powdery
B1: hydrated, 2: colourless and crystalline, 3: anhydrous, 4: blue and powdery
C1: hydrated, 2: blue and powdery, 3: anhydrous, 4: colourless and crystalline
D1: hydrated, 2: blue and crystalline, 3: anhydrous, 4: white and powdery
✓ Correct answer
D: 1: hydrated, 2: blue and crystalline, 3: anhydrous, 4: white and powdery
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